Add http support

[eyalzh]

No description provided.

[Copilot]

Pull Request Overview

This PR implements HTTP support for MCP (Model Context Protocol) servers, replacing the previous placeholder implementation with full functionality. The changes enable users to add HTTP-based MCP servers with optional custom headers and proper authentication handling.

Key changes:

• Added HTTPServerConfig class to handle HTTP server configuration
• Implemented HTTP session management with OAuth authentication support
• Updated CLI to support header parameters for HTTP servers

Reviewed Changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
mcp_client/config.py	Adds HTTPServerConfig class and updates MCPServersConfig to support HTTP servers
mcp_client/client_session_provider.py	Updates get_streamablehttp_session to accept HTTPServerConfig and handle optional OAuth
mcp_client/session_manager.py	Adds HTTP server session initialization support
commands/mcp.py	Replaces placeholder HTTP handler with full implementation including header parsing
cxk.py	Adds --header CLI argument support for HTTP server configuration
tests/e2e/test_e2e.py	Updates tests to verify actual HTTP server functionality instead of placeholder
tests/templates/spec9.md	Adds new test template file (unrelated to HTTP support)
mcp_client/__init__.py	Exports HTTPServerConfig for external use

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[Copilot]

This template file appears unrelated to the HTTP support changes described in the PR title and should likely be in a separate commit or PR.

Suggested change

	# Task Template
	## Issue description
	{% set issue = call_tool('github', 'get_issue', {'issue_number': 17, 'owner': 'eyalzh', 'repo': 'browser-control-mcp'}) %}
	### Github Issue Description
	{{ issue.body }}